class DoubleEigen

(Return to index)

Double eigenvector routines.

Representation of eigenvalues and eigenvectors for a matrix of type Matrix<double>.

Type:	Instantiable
Include file:	./Algebra/DoubleEigen.hh

Synopsis (including inherited members):

• Public members:
  • DoubleEigen (const Matrix<double>&,bool) ;
  • DoubleEigen () ;
  • DoubleEigen (const DoubleEigen&) ;
  • ~DoubleEigen () ;
  • Vector<complex<double> > eigenValues ()const ;
  • Matrix<complex<double> > eigenVectors ()const ;
  • Matrix<double> packedEigenVectors ()const ;

Documentation:

• Public members:

  DoubleEigen (const Matrix<double>&,bool) ;

  Constructor.
  Construct the vector of complex eigenvalues for the matrix M. If vec is true, the matrix of eigenvectors is also built.

  Vector<complex<double> > eigenValues ()const ;

  Get eigenvalues.
  Return the eigenvalues as a complex vector.

  Matrix<complex<double> > eigenVectors ()const ;

  Get eigenvectors.
  Return the eigenvectors as the column vectors of a complex matrix.

  Matrix<double> packedEigenVectors ()const ;

  Get eigenvectors.
  Return the eigenvectors packed in a real matrix. Real eigenvectors appear a single column in the same position as the corresponding real eigenvalue. Complex eigenvalues occur in conjugate pairs, and the corresponding eigenvectors appear as two real columns containing the real and imaginary parts respectively.